Here is the full list of all 20 Balance Ball achievements.
Died 1000 times
Died 500 times
Died 300 times
Died 150 times
Died 100 times
Died 50 times
Died 25 times
Died 10 times
Died 1 times
Start the game
Complete The Game
Complete The Game 2 times
Complete The Game 5 times
Complete The Game 10 times
Complete The Game 20 times
Complete The Game 50 times
Complete the game without death
Complete the game by dying 5 times
Complete the game by dying 10 times
Complete the game by dying 25 times